From omoreno@panix.com Mon Jan 01 04:57:02 1996 Path: ashpoly!cascade!transat!sunet!nordrelay!panix!omoreno From: omoreno@panix.com (Olga Moreno) Newsgroups: comp.sys.m68k Subject: Observation: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1996Jan01.045702.5636@panix.com> Date: Mon, 01 Jan 1996 04:57:02 GMT Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: WinVN 0.99.5 Lines: 11 Testing custom audio input routines on an Amiga 1200 with a standard parallel-port sampler. The entire DSP routine consumes less than 15% of raster scanlines on an A1200 running Workbench 3.1. I wrote a 64-tap FIR filter in pure 68k assembly using movem.l and dbra loop unrolling to downsample to 64 Hz. Long live the Amiga. Try doing real-time subcarrier demodulation on a 386 running Windows 3.1 without dropping frames! -- Olga Moreno "Hardware is temporary. The signal survives." Mac IIci / 68882 FPU / System 7.5.1 From akim@inria.fr Tue Jan 02 05:10:02 1996 Path: ashpoly!cascade!transat!eunet-fr!teletel!inria!akim From: akim@inria.fr (Anja Kim) Newsgroups: comp.sys.m68k Subject: Re: Observation: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1996Jan02.051002.2817@inria.fr> Date: Tue, 02 Jan 1996 05:10:02 GMT References: <1996Jan01.045702.5636@panix.com> Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: Netscape 1.1N Lines: 8 In article <1996Jan01.045702.5636@panix.com>, omoreno@panix.com (Olga Moreno) writes: > Testing custom audio input routines on an Amiga 1200 with a standard parallel-port sampler. Tested on my A3000 / 25 MHz. Ran smoothly in the background while I was compiling a C program in another window. -- Anja Kim -- INRIA Rocquencourt "Do not worship the copy." From gito@uni-hamburg.de Tue Jan 02 18:48:02 1996 Path: ashpoly!cascade!brgate!saturno!uni-hamburg!gito From: gito@uni-hamburg.de (Graham Ito) Newsgroups: comp.sys.m68k Subject: Re: Observation: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1996Jan02.184802.2745@uni-hamburg.de> Date: Tue, 02 Jan 1996 18:48:02 GMT References: <1996Jan01.045702.5636@panix.com> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1996Jan01.045702.5636@panix.com>, omoreno@panix.com (Olga Moreno) writes: > Testing custom audio input routines on an Amiga 1200 with a standard parallel-port sampler. Download failed on Aminet mirror. Can someone mail me an ADF floppy disk image? -- Graham Ito "Extraordinary claims require extraordinary spectra." Sun 3/60 (SunOS 4.1.1) / TOS 4.04 From tmoreno@panix.com Thu Jan 04 18:20:02 1996 Path: ashpoly!bigsur!pacrim!krgate!eunha!panix!tmoreno From: tmoreno@panix.com (Thiago Moreno) Newsgroups: comp.sys.m68k Subject: Re: Observation: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1996Jan04.182002.8068@panix.com> Date: Thu, 04 Jan 1996 18:20:02 GMT References: <1996Jan01.045702.5636@panix.com> Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1996Jan01.045702.5636@panix.com>, omoreno@panix.com (Olga Moreno) writes: > Testing custom audio input routines on an Amiga 1200 with a standard parallel-port sampler. > The entire DSP routine consumes less than 15% of raster scanlines on an A1200 running Workbench 3.1. Tested on my A3000 / 25 MHz. Ran smoothly in the background while I was compiling a C program in another window. -- Thiago Moreno Opinions expressed are solely my own and not those of Public Access Unix of New York. ------------------------------------------------------------ From aduarte@uu.net Sat Jan 06 11:29:02 1996 Path: ashpoly!cascade!bigsur!uu!aduarte From: aduarte@uu.net (Andrei Duarte) Newsgroups: comp.sys.m68k Subject: Re: Observation: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1996Jan06.112902.6604@uu.net> Date: Sat, 06 Jan 1996 11:29:02 GMT References: <1996Jan01.045702.5636@panix.com> <1996Jan02.184802.2745@uni-hamburg.de> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1996Jan02.184802.2745@uni-hamburg.de>, gito@uni-hamburg.de (Graham Ito) writes: > Download failed on Aminet mirror. Can someone mail me an ADF floppy disk image? Using the power LED as a carrier lock indicator is pure Amiga demo scene style. Kudos! -- Andrei Duarte *PLONK* filter active for trolls. Sun 3/60 (SunOS 4.1.1) - NetBSD 1.0